How to find out if a drive is spinning down properly.

[shenuka dasanayake]

Code:

camcontrol: error sending command
da0: UNKNOWN
ada0: SPINNING
ada1: SPINNING
ada2: SPINNING
ada3: SPINNING
camcontrol: error sending command
da0: UNKNOWN

what is the code for the above script

 

[Glorious1]

The camcontrol method of checking doesn't work for disks on an HBA, at least not for me. Use joeschmuck's smartctl method:
https://www.ixsystems.com/community...ive-is-spinning-down-properly.2068/post-28451

 

[shenuka dasanayake]

I'm trying to see if my disks will spin down after a period of time. So far no good. Is it possible to see which process is using the disks? Running the script I just get this.

Code:

camcontrol: error sending command
da0: UNKNOWN
ada0: SPINNING
ada1: SPINNING
ada2: SPINNING
ada3: SPINNING

can you put the shell code t the above disk check

 

[shenuka dasanayake]

The camcontrol method of checking doesn't work for disks on an HBA, at least not for me. Use joeschmuck's smartctl method:
https://www.ixsystems.com/community...ive-is-spinning-down-properly.2068/post-28451

thank you! can you tell how to run that script

 

[johns007]

So it seems here, that we have determined that we can't spin down idle drives. Too many variables, too many functions/daemons running especially a fully featured nas.
It's safe to say, we can put this one to rest by concluding that the drives will always be spinning. This is why i give my drives a maximum life of 5 years, even though i don't leave my nas on 24 hours a day, it's just the average used in data centres globally.

 

[jones982]

So it seems here, that we have determined that we can't spin down idle drives.

I can confirm that here the disks are also spinning up even with no activity on the zfs pool (SMBv2).

I'm using this script to check the status:

Code:

#!/bin/sh

# method 1

for i in ada0 ada2; do

CM=$(camcontrol cmd $i -a "E5 00 00 00 00 00 00 00 00 00 00 00" -r - | awk '{print $10}')
if [ "$CM" = "FF" ] ; then
echo "$i: SPINNING"
elif [ "$CM" = "00" ] ; then
echo "$i: IDLE"
else
echo "$i: UNKNOWN"
fi

done


# method 2

for i in ada0 ada2; do

smartctl --nocheck=standby /dev/$i > /dev/null 2>&1
if [ $? -ne 2 ] ; then
echo "$i: SPINNING"
else
echo "$i: IDLE"
fi

done

# to compare Start_Stop_Count

smartctl -a /dev/ada0 | grep "Start_Stop_Count"
smartctl -a /dev/ada2 | grep "Start_Stop_Count"

I spin the disks down with

camcontrol standby ada2

 

[jones982]

I will have a look at https://github.com/ngandrass/freenas-spindown-timer